______ we will have a good harvest this year is still unkown.
A. Whether
B. If
C. Which
D. That
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The teacher asked him if ______ was really true.
A. What had he said
B. what he had said
C. that had he said
D. Where has he gone
Can you tell me _____ the railway station?
A. How I can get to
B. How can I get to
C. where I can get to
D. where can I get to
No one will be sure ______ in a million years.
A. what will man look like
B. what man will look like
C. man will look like what
D. what look will man like
It worried me a lot _______ her hair was turning gray.
A. while
B. that
C. if
D. for
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